If your propane generator is surging, it could be an issue with the carburetor or the float needle valve. Both of these issues are common and can be repaired quickly and easily with a little knowledge.
Float needle valve
There are three main components to a float needle valve. They include the float, the orifice or seat, and the needle. The orifice or seat should be inspected to ensure there are no leaks or blockages. A faulty orifice or seat can cause surging, hydro locking, and an unresponsive engine.
An unresponsive float will not allow enough fuel to enter the engine. This will eventually cause the engine to run rich, burn through a limited supply of gas, or foul plugs. If the float has a problem, it can be removed and cleaned.
To determine if there is a problem, it is a good idea to check the height of the float. This can be determined by measuring the length of the float from its mating surface to its highest point.
Clogged carburetor
If you are running your propane generator for prolonged periods of time, you may be experiencing a surging problem. Surging can be caused by several factors, including a clogged carburetor. Here are a few ways to fix it.
First, you should check the air-fuel mixture screw. It controls the amount of fuel and air mixture that goes into the engine. Tightening it too much can cause the engine to run too lean.
Next, you should clean the main jet passage. This is a small brass piece that allows fuel to pass through the carburetor. You should clean this with carburetor cleaner.
A dirty idle jet can also cause surging. Clean the jet with compressed air or with a carburetor spray cleaner.
Clogged fuel filter
When you are idling your generator and you notice it surging, it is a good idea to check the fuel filter. If the filter is clogged, then you will need to replace it. Clogged filters can waste fuel and starve the engine.
It’s important to have a fuel filter that matches the type of fuel you are using. Old, dirty or sticky fuel can clog the filter and cause the generator to surge. Having a clean fuel tank can also help prevent a clogged filter.
Changing a fuel filter is a fairly simple process. Usually, the generator manual will tell you which filter to buy. In some cases, you can just go to the local hardware store and pick one up.
Spring that holds governor arm back was perished
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Spark plug wear out and becomes dirty
If your propane generator is running rough and surging, it might be time to check your spark plug. A dirty spark plug can lead to engine problems and a poor fuel economy. It can also cause a misfire, a condition that can be expensive to repair.
When your spark plug becomes dirty and begins to misfire, your engine is unable to run properly. This is because the spark plug is unable to properly ignite the air-fuel mixture in the combustion chamber. You can use a feeler gauge to measure the gap between the electrode and the side of the spark plug.
If you suspect that your spark plug is faulty, take your car to a mechanic for diagnosis. He will be able to determine the exact problem and recommend the best course of action.
Fuel degrades
Surge problems in propane generators can be caused by a variety of factors. In some cases, they can be caused by low fuel levels, incorrect fuel, or contaminated fuel. Alternatively, they can be caused by a faulty or malfunctioning fuel pump. These surges are often a signal that something is wrong with the engine. If your generator isn’t producing power, or you’re having trouble starting it, it might be time to investigate what’s going on.
The best way to discover what’s causing the problem is to check the fuel system. Ensure that the fuel line isn’t clogged or leaking. Also, make sure that the generator isn’t running out of gas.
